ΔE 5.1, very close: most people won’t see a difference side by side. Pyrrole Orange is a little lighter than Mythical Orange. They are different kinds of paint: Army Painter Mythical Orange is an opaque base/layer paint and Golden Pyrrole Orange is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.
Yes, for most jobs. Very close match (ΔE 5). Pyrrole Orange is a little lighter than Mythical Orange. They are different kinds of paint.
The same difference applies the other way round: Mythical Orange is a little darker.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Mythical Orange on the colour wheel See Pyrrole Orange on the colour wheel
All matches: Mythical Orange equivalents · Pyrrole Orange equivalents